Mixture
Solvent
Substance that dissolves another substance
Acid
Macromolecule
Large molecules essential for life.
Protons
subatomic particle with a positive charge.
Polar molecules
Molecules with opposite ends
Substance being dissolved
Base
pH above 7
Protiens
compound made of carbon, hydrogen, oxygen and nitrogen
Neutrons
subatomic particle with a neutral charge.
Ions
When electrons are gained or lost
Compound
substance made of 2 or more elements
Buffers
Substances produced by cells that prevent sudden changes in pH
Carbohydrates
Compound made of carbon, hydrogen, and oxygen
Electrons
subatomic particle with a negative charge
When is an ionic bond formed?
Homogeneous Mixture
Parts of a solution that are evenly mixed
Cohesion
attraction between molecules of the same substances
Lipids
Compound made of hydrogen, carbon, and oxygen. its a fatty acids and glycerol
Element
Pure substance consisting of the same type of atom.
When is a covalent bond formed?
When electrons are shared between atoms
Heterogeneous mixture
Unevenly mixed mixture
Adhesion
the attraction between molecules of different substances
Nucleic acid
Compound made of hydrogen, oxygen, nitrogen, and phosphorus.
About how many elements are there commonly found in living organisms?
20-24
Covalent bonds in which electrons are shared unequally, resulting in a molecule which has poles.